PMID- 24161446 OWN - NLM STAT- MEDLINE DCOM- 20140127 LR - 20220321 IS - 1873-6750 (Electronic) IS - 0160-4120 (Linking) VI - 62 DP - 2014 Jan TI - Early life phthalate exposure and atopic disorders in children: a prospective birth cohort study. PG - 48-54 LID - S0160-4120(13)00195-5 [pii] LID - 10.1016/j.envint.2013.09.002 [doi] AB - The role of phthalate exposure at different stages in the immune system and atopic disorders is not well-known. This study aims to evaluate the effects of prenatal and postnatal phthalate exposures on immunoglobulin E (IgE) levels and atopic dermatitis (AD) in children by objective biomarkers. We conducted a prospective Taiwan Birth Panel cohort study with 483 mother/infant pairs. Finally, 161 urine specimens at 3rd trimester of pregnancy, 219 urine specimens from children at age 2, and 192 urine specimens at age 5 were analyzed after excluding missing data and loss to follow-up. Urine monoethyl phthalate (MEP), monobutyl phthalate (MBP), monobenzyl phthalate (MBzP), and mono-(2-ethylhexyl) phthalate (MEHP) at 3rd trimester of pregnancy and at ages 2 and 5 were measured by ultra-performance liquid chromatography coupled with tandem mass spectrometry. At ages 2 and 5, information on the development of AD and serum total IgE was collected. The association between urine phthalate metabolite levels at different stages and serum IgE and AD was evaluated by multivariate linear regression and logistic regression. Urine phthalate metabolite levels were higher at age 2 than those at pregnancy and age 5. At each period, urine MBP levels were higher than MEP, MEHP, and MBzP. MEHP levels at age 2 positively correlated with serum IgE levels (per ln-unit: beta=0.191, p=0.02). Analyses stratified by gender revealed that MEHP levels positively correlated with serum IgE levels only in boys (per ln-unit: beta=0.256, p=0.03). When dividing into quartiles, urine MBzP levels at age 2 had a significant association with AD. We found no statistically significant association of other phthalate metabolites with IgE and AD. Early life phthalate exposure may increase the risk of allergic sensitization and atopic disorders. CI - (c) 2013. FAU - Wang, I-Jen AU - Wang IJ AD - Department of Pediatrics, Taipei Hospital, Ministry of Health and Welfare, Taipei, Taiwan; China Medical University, Taichung, Taiwan; College of Medicine, National Yang-Ming University, Taipei, Taiwan. FAU - Lin, Ching-Chun AU - Lin CC FAU - Lin, Yen-Ju AU - Lin YJ FAU - Hsieh, Wu-Shiun AU - Hsieh WS FAU - Chen, Pau-Chung AU - Chen PC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131024 PL - Netherlands TA - Environ Int JT - Environment international JID - 7807270 RN - 0 (Biomarkers) RN - 0 (Phthalic Acids) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Biomarkers/blood MH - Child MH - Cohort Studies MH - Dermatitis, Atopic/*epidemiology MH - *Environmental Exposure MH - Female MH - Humans MH - Immunoglobulin E/*blood MH - Infant MH - Male MH - Maternal Exposure MH - Phthalic Acids/metabolism/*urine MH - Pregnancy MH - Pregnancy Trimester, Third MH - Prospective Studies MH - Sex Factors MH - Taiwan/epidemiology OTO - NOTNLM OT - AD OT - Atopic dermatitis OT - BBzP OT - Cohort study OT - DBP OT - DEHP OT - DEP OT - GM OT - IgE OT - MBP OT - MBzP OT - MEHP OT - MEP OT - atopic dermatitis OT - butyl benzyl phthalate OT - di(2-ethylhexyl) phthalate OT - dibutyl phthalate OT - diethylphthalate OT - geometric mean OT - immunoglobulin E OT - mono(2-ethylhexyl) phthalate OT - monobenzyl phthalate OT - monobutyl phthalate OT - monoethyl phthalate EDAT- 2013/10/29 06:00 MHDA- 2014/01/28 06:00 CRDT- 2013/10/29 06:00 PHST- 2012/12/01 00:00 [received] PHST- 2013/09/03 00:00 [revised] PHST- 2013/09/03 00:00 [accepted] PHST- 2013/10/29 06:00 [entrez] PHST- 2013/10/29 06:00 [pubmed] PHST- 2014/01/28 06:00 [medline] AID - S0160-4120(13)00195-5 [pii] AID - 10.1016/j.envint.2013.09.002 [doi] PST - ppublish SO - Environ Int. 2014 Jan;62:48-54. doi: 10.1016/j.envint.2013.09.002. Epub 2013 Oct 24.